Thanks for making this valuable work available.
It is, however, unfortunate to have to state that the compiler (Kashinath Sharma)of this work seems to be misidentified.
This is in fact a copy of the 1952 edition published by the Nirnaya Sagar Press on May 01, 1952, "enlarged and re-edited with sources etc." by Narayan Ram Acharya.
Acharya clearly mentions in his Introduction that the Subhashita-ratna-bhandagara "began as, and still remains an eclectic collection of choice Sanskrit verse made by the learned pundits associated with the Nirnaya Sagar Press".
While thanking "archive.org
" for making available to the readers this valuable text, I have to request them to be careful about the authorship and editorship of the concerned works.
--Shreenand L. Bapat